Rain and Flooding

Rain is a type of precipitation which is readily absorbed by the ground. However, flooding might occur if there is a downpour or heavy rain. Flooding can result in damage to property, illness and even death.

24,619 Questions
Rain and Flooding

Seasonal grassland are found?

Seasonal grasslands can be found in places where there are drastic changes in the weather from one season to the next. For example, it could be found in the tundra and parts of the northern steppes, where the grassland turns to an icy desert in winter. It can also be found in North-Central Africa south of the Sahara Desert, in a region called the Sahel, where a deserted landscape could turn into a grassland during the rainy season.

Rain and Flooding
Snow and Ice

How many inches of snow would one inch of rain produce?

The ratio of snow to water can vary a great deal depending on the vertical profiles of temperature and moisture, and how they change during a storm. Typically 1 inch of rain is equal to 1 foot of snow, a 12-1 ratio. Depending on the temperature and moisture profiles of the snow growth region of the atmosphere and the origin area of the storm system, that ratio can go higher, say 20-1, which would be 20 inches, or lower, say 6-1 or so. 12-1 is most forecasters starting point, and if you go to your local NWS page and read the area forecast discussion, they usually tell what ratio they believe a system will have as it moves through your area.

Meteorology and Weather
Environmental Issues
Rain and Flooding
Water Cycle

Describe a large water cycle that takes a long time to complete?

the longest water cycle to complete is rain because rain is water

Rain and Flooding
Weight and Mass

How much do clouds weigh?

To calculate the weight of a cloud, you first have to figure out how dense it is. The average density of a cumulus cloud is around half a gram of water per cubic meter. Second, you need to determine how big the cloud is, presumably by measuring its shadow while the sun is above it. A typical cloud is about a kilometer across and roughly cube shaped, meaning it has a volume of one billion cubic meters.

Using this formula, scientists have determined that the average cumulus cloud weighs around 1.1 million pounds.

Rain and Flooding
Prefixes Suffixes and Root Words

What is the the prefix meaning for water?







Rain and Flooding
Lakes and Rivers

Why does river straightening reduce flood risk?

Straightening of river reduces floods in the immediate area because it allows the water to go straight instead of having to turn through curves. A natural meandering river has a curvy or sinusoidal shape to its path. A straight river would travel only a kilometer per kilometer of valley floor. Water associated with a curvy river will have to follow the natural sinusoidal curves and will travel considerably more distance per kilometer of valley floor. Also, water in a natural river will have a slower velocity because the course of the river is altered with every curve. A straight river sheds water faster from the immediate area because it has less distance to travel and is not slowed by the curves, however the straightening a river is associated with negative consequences including increased risk of flooding downstream and increased erosion.

Increasing the velocity causes more erosion. If a river is straight then erosion digs the river into a deeper and deeper channel. A curvy river is typically has a slower velocity and erodes less. Also the erosion in a curvy river is associated with the 'cut bank' or outside of each curve not with a deepening channel as seen in straightened rivers. If you imagine yourself as a water molecule traveling down the river when you arrive at the outside of a curve your inertia will cause you to run into the 'cut bank' until the outer bank slows your speed and alters your course. You may have caused a slight bit of erosion but because you keep hitting curves you can not build up the speed needed to induce much erosion. After eroding from the "cut bank" sediment is often deposited in the 'point bar' or inside of the next curve. This causes the curves to slowly meander sometimes leaving 'ox bows' or multiple channels. Building roads or structures in these meandering curves is unwise as inevitably erosion will destroy the structure. The fast moving waters of a straight river can carry far more sediments down stream because of the increased velocity. Straightened streams often had to be lined with concrete or 'rip rap' where the original curvy river did not because the high velocity induced severe deepening of streams and both banks would then collapse in.

Straitened rivers increase the risk of flooding downstream. A straight river or stream holds less water per distance unit of valley floor than a natural and curvy river. In a rain event a natural curvy river will hold more water. Also, since it is not slowed by the curves of a natural river, a straight river will shed what little water it holds faster. This is exacerbated by the draining of wetlands upstream and the tiling of agricultural lands to shed standing water. Wetlands and intermittent pools act as large sponges, holding and delivering rain and snow-melt slowly to downstream rivers. Furthermore, the loss of flood planes by building levies causes rivers to rise higher during flood events and again delivers more water downstream in a short amount of time.

Floods downstream have become more 'flashy' and acute because of straightening of rivers, building of levies and draining of wetlands. A rain event in the Midwest of North America prior to European settlement would have induced far less of a flood height down stream than the same rain event would cause today. This is because the water would be delivered to downstream locations slowly over a greater duration of time.

Meteorology and Weather
Rain and Flooding

Is red sky in the morning sailors take warning red sky at night sailors delight is based on a myth or a fact?

Both, but more on fact. Since the sun comes up in the east, a red sky in the morning often means there is adverse weather developing, whereas if there's red sky at dusk, then the inclement weather has passed and there will be a nice day the following day.


It's a simplification based on the fact that most weather systems move from west to east. It's not a "fact", but it is based on probable events in the next 12 to 24 hours.

Rain and Flooding

Name a chore you might get out of doing if it rains?


Taking out the Trash

washing the car


mowing the lawn

cleaning your windows

Rain and Flooding
Earth Sciences

What is the driving force for water intake?

thirst :)

answer --> pressure differential

Rain and Flooding
Earth Sciences
Water Cycle

What role does temperature play in the water cycle?

If the temperature is on the higher side, water from the rivers, oceans evaporate at a faster pace. The more the heat in the summer, the more the possibility of excessive rain during rainy season. In this way, temperature plays a crucial role in the water cycle.

Ancient History
Rain and Flooding
The River Nile

How far does the nile rivers flood plain stretch?

it doesn't anymore. a dam was built in 1970 so the river doesn't flood anymore.

Rain and Flooding
Snow and Ice

How much is 15cm of snow in inches?

Just convert cm to inches.

If there is 2.54 cm in 1 inch.

5 inches of snow.
Rain and Flooding
Air Pollution

How is pollution related to acid rain?

it goes into the atmosphere and the clouds absorb it and if there is sulphur in the pollution it then mixes with the water in the clouds and rains it back down as acid rain

Environmental Issues
Rain and Flooding
Natural Disasters

Which are the most vulnerable homes during floods?


1. Buildings, which are constructed with earth-based materials or using stone and brick in mud mortar

are highly vulnerable to damage in heavy rains and/or floods.

2. The huts made from biomass materials like bamboo, leaves, thatch or light construction

using metal sheets are easily destroyed in floods and washed away.

3. The occupation of areas within the flood plain of rivers has increased the

vulnerability, especially in areas of high population concentration. Flood plains

attract poor people because of inexpensive land values.

Rain and Flooding

What is average rainfall in Washington state?


inches per year

Rain and Flooding

How long can some desert places go without rain?

There are some deserts, such as the Atacama Desert of South America where parts have not received any significant precipitation in centuries.

Rain and Flooding

How do you make rain go away?

You pray to God or do the rain dance (look up "Rain Dance" on Youtube.)

Rain and Flooding

Why does the southwest monsoon bring heavy rains?

The air is carrying much moisture.

Flower Gardening
Rain and Flooding
Jokes and Riddles

If April showers bring May flowers what do Mayflowers bring?

  • Mayflowers bring pilgrims.
  • May Flowers will bring June Bugs.

The original poem by Sara Coleridge:

January brings the snow,

Makes our feet and fingers glow.

February brings the rain,

Thaws the frozen lake again.

March brings breezes loud and shrill,

Stirs the dancing daffodil.

April brings the primrose sweet,

Scatters daises at our feet.

May brings flocks of pretty lambs, Hay Fever

Skipping by their fleecy dams.

June brings tulips, lilies, roses,

Fills the children's hand with posies.

Hot July brings cooling showers,

Apricots and gillyflowers.

August brings the sheaves of corn,

Then the harvest home is borne.

Warm September brings the fruit,

Sportsmen then begin to shoot.

Fresh October brings the pheasants,

Then to gather nuts is pleasant.

Dull November brings the blast,

Then the leaves are whirling fast.

Chill December brings the sleet,

Blazing fire, and Christmas treat.

Rain and Flooding

Where does it rain the most in the US?


Rain and Flooding

What effects do floods have on buildings?


The damage to buildings due to floods are as follows:

1) Houses are washed away due to the impact of the water

under high stream velocity. The houses are commonly

destroyed or dislocated so severely that their reconstruction

is not feasible.

2) Houses constructed out of light weight materials like wood

float when they are not anchored properly.

3) Damage caused by inundation of house. The house may

remain intact on its foundation, but damage to materials

may be severe. Repair is often feasible but may require

special procedures to dry out properly.

4) Undercutting of houses. The velocity of the water may scour and erode the foundation of the

house or the earth under the foundation. This may result in the collapse of the house or require

substantial repair.

5) Damage caused by debris. Massive floating objects like

trees, electric poles, etc. may damage the standing houses.

Rain and Flooding

How big are raindrops?

About the size of a pea

Rain and Flooding

What happens to ore after it's been mined?

Extracted Ore is crushed smelted, a chemical process usually requiring huge quantities of heat at very high temperature, to extract the metal from the mineral that was the ore. Eventually each specific ore deposit is exhausted and the mine falls into disuse.

Rain and Flooding
Air Pollution

What type of energy causes acid rain?

Non renewable energy along with other pollutions.


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